The new developments in Perl syntax mostly solve this by having an explicit separator for invocant specification: method foo ($bar, $baz) { ... } has $sel

The new developments in Perl syntax mostly solve this by having an explicit separator for invocant specification: method foo ($bar, $baz) { ... } has $self, $bar and $baz, while method foo ($class: $bar, $baz) { ... } has $class, $bar and $baz.